RISC-V: User-facing API

This patch contains code that is in some way visible to the user:
including via system calls, the VDSO, module loading and signal
handling.  It also contains some generic code that is ABI visible.

Signed-off-by: Palmer Dabbelt <palmer@dabbelt.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/arch/riscv/include/uapi/asm/sigcontext.h b/arch/riscv/include/uapi/asm/sigcontext.h
new file mode 100644
index 000000000000..ed7372b277fa
--- /dev/null
+++ b/arch/riscv/include/uapi/asm/sigcontext.h
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2012 Regents of the University of California
+ *
+ *   This program is free software; you can redistribute it and/or
+ *   modify it under the terms of the GNU General Public License
+ *   as published by the Free Software Foundation, version 2.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *   GNU General Public License for more details.
+ */
+
+#ifndef _UAPI_ASM_RISCV_SIGCONTEXT_H
+#define _UAPI_ASM_RISCV_SIGCONTEXT_H
+
+#include <asm/ptrace.h>
+
+/*
+ * Signal context structure
+ *
+ * This contains the context saved before a signal handler is invoked;
+ * it is restored by sys_sigreturn / sys_rt_sigreturn.
+ */
+struct sigcontext {
+	struct user_regs_struct sc_regs;
+	union __riscv_fp_state sc_fpregs;
+};
+
+#endif /* _UAPI_ASM_RISCV_SIGCONTEXT_H */